Not sure why we'd want an inside zipper. Just something else to scratch up the bike. I've never had a pair of zippered boots but my next pair will be. Per JC's evaluations the SWATs look like the winner. BTW, I've had H.D. boots re-soled.
O.K. this statement is puzzling to me. If you're rubbing your boots on your bike......you don't need a zipper to scratch the bike.

Personally, my boots don't touch anything but my floorboards, shifters and brake pedal.
On the other hand......my wife's bike constantly has rubber on the exhaust (I think it's from her heel). But I've never saw any scratches that would be from her Original Swat boots. It took me two years to talk her into trying them. Now she tells other women "they're the most ugly boot you'll ever put on..............and the most comfortable".
There comes a time when comfort prevails over the look good.
